28473219 has 12 divisors (see below), whose sum is σ = 41206776. Its totient is φ = 18945792.

The previous prime is 28473209. The next prime is 28473227. The reversal of 28473219 is 91237482.

It is not a de Polignac number, because 28473219 - 2⁵ = 28473187 is a prime.

It is a super-2 number, since 2×28473219² = 1621448400443922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28473209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2452 + ... + 7934.

It is an arithmetic number, because the mean of its divisors is an integer number (3433898).

Almost surely, 2^28473219 is an apocalyptic number.

28473219 is a deficient number, since it is larger than the sum of its proper divisors (12733557).

28473219 is a wasteful number, since it uses less digits than its factorization.

28473219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6066 (or 6063 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 28473219 is about 5336.0302660311. The cubic root of 28473219 is about 305.3600299189.

The spelling of 28473219 in words is "twenty-eight million, four hundred seventy-three thousand, two hundred nineteen".